diff --git a/hw/spapr.h b/hw/spapr.h
index 4a3520f..b37f337 100644
--- a/hw/spapr.h
+++ b/hw/spapr.h
@@ -336,6 +336,8 @@ void spapr_iommu_init(void);
 DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size);
 void spapr_tce_free(DMAContext *dma);
 int spapr_dma_dt(void *fdt, int node_off, const char *propname,
-                 DMAContext *dma);
+                 uint32_t liobn, uint64_t window, uint32_t size);
+int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
+                      DMAContext *dma);
 
 #endif /* !defined (__HW_SPAPR_H__) */
diff --git a/hw/spapr_iommu.c b/hw/spapr_iommu.c
index 3021bfe..50c288d 100644
--- a/hw/spapr_iommu.c
+++ b/hw/spapr_iommu.c
@@ -221,31 +221,47 @@ void spapr_iommu_init(void)
 }
 
 int spapr_dma_dt(void *fdt, int node_off, const char *propname,
-                 DMAContext *dma)
+                 uint32_t liobn, uint64_t window, uint32_t size)
 {
-    if (dma) {
-        sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma);
-        uint32_t dma_prop[] = {cpu_to_be32(tcet->liobn),
-                               0, 0,
-                               0, cpu_to_be32(tcet->window_size)};
-        int ret;
-
-        ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
-        if (ret < 0) {
-            return ret;
-        }
+    uint32_t dma_prop[5];
+    int ret;
 
-        ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2);
-        if (ret < 0) {
-            return ret;
-        }
+    dma_prop[0] = cpu_to_be32(liobn);
+    dma_prop[1] = cpu_to_be32(window >> 32);
+    dma_prop[2] = cpu_to_be32(window & 0xFFFFFFFF);
+    dma_prop[3] = 0; /* window size is 32 bits */
+    dma_prop[4] = cpu_to_be32(size);
 
-        ret = fdt_setprop(fdt, node_off, propname, dma_prop,
-                          sizeof(dma_prop));
-        if (ret < 0) {
-            return ret;
-        }
+    ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
+    if (ret < 0) {
+        return ret;
+    }
+
+    ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2);
+    if (ret < 0) {
+        return ret;
+    }
+
+    ret = fdt_setprop(fdt, node_off, propname, dma_prop, sizeof(dma_prop));
+    if (ret < 0) {
+        return ret;
     }
 
     return 0;
 }
+
+int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
+                      DMAContext *iommu)
+{
+    if (!iommu) {
+        return 0;
+    }
+
+    if (iommu->translate == spapr_tce_translate) {
+        sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, iommu);
+        return spapr_dma_dt(fdt, node_off, propname,
+                tcet->liobn, 0, tcet->window_size);
+    }
+
+    return -1;
+}
diff --git a/hw/spapr_pci.c b/hw/spapr_pci.c
index 7a17d54..f98cd7e 100644
--- a/hw/spapr_pci.c
+++ b/hw/spapr_pci.c
@@ -282,7 +282,6 @@ static int spapr_phb_init(SysBusDevice *s)
     char *namebuf;
     int i;
     PCIBus *bus;
-    uint32_t liobn;
 
     phb->dtbusname = g_strdup_printf("pci@%" PRIx64, phb->buid);
     namebuf = alloca(strlen(phb->dtbusname) + 32);
@@ -323,8 +322,10 @@ static int spapr_phb_init(SysBusDevice *s)
                            PCI_DEVFN(0, 0), PCI_NUM_PINS);
     phb->host_state.bus = bus;
 
-    liobn = SPAPR_PCI_BASE_LIOBN | (pci_find_domain(bus) << 16);
-    phb->dma = spapr_tce_new_dma_context(liobn, 0x40000000);
+    phb->dma_liobn = SPAPR_PCI_BASE_LIOBN | (pci_find_domain(bus) << 16);
+    phb->dma_window_start = 0;
+    phb->dma_window_size = 0x40000000;
+    phb->dma = spapr_tce_new_dma_context(phb->dma_liobn, phb->dma_window_size);
     pci_setup_iommu(bus, spapr_pci_dma_context_fn, phb);
 
     QLIST_INSERT_HEAD(&spapr->phbs, phb, list);
@@ -476,7 +477,9 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
     _FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
                      sizeof(interrupt_map)));
 
-    spapr_dma_dt(fdt, bus_off, "ibm,dma-window", phb->dma);
+    spapr_dma_dt(fdt, bus_off, "ibm,dma-window",
+                 phb->dma_liobn, phb->dma_window_start,
+                 phb->dma_window_size);
 
     return 0;
 }
diff --git a/hw/spapr_pci.h b/hw/spapr_pci.h
index 05447b4..e54809a 100644
--- a/hw/spapr_pci.h
+++ b/hw/spapr_pci.h
@@ -37,6 +37,12 @@ typedef struct sPAPRPHBState {
     MemoryRegion memspace, iospace;
     target_phys_addr_t mem_win_addr, mem_win_size, io_win_addr, io_win_size;
     MemoryRegion memwindow, iowindow;
+    target_phys_addr_t msi_win_addr;
+    MemoryRegion msiwindow;
+
+    uint32_t dma_liobn;
+    uint64_t dma_window_start;
+    uint64_t dma_window_size;
     DMAContext *dma;
 
     struct {
diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c
index 05b5503..c734eb4 100644
--- a/hw/spapr_vio.c
+++ b/hw/spapr_vio.c
@@ -142,7 +142,7 @@ static int vio_make_devnode(VIOsPAPRDevice *dev,
         }
     }
 
-    ret = spapr_dma_dt(fdt, node_off, "ibm,my-dma-window", dev->dma);
+    ret = spapr_tcet_dma_dt(fdt, node_off, "ibm,my-dma-window", dev->dma);
     if (ret < 0) {
         return ret;
     }
